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    • 1. 发明授权
    • Pick-up device for magnetically recorded information and method and
system for using same
    • 用于磁记录信息的拾取装置及其使用方法和系统
    • US4228473A
    • 1980-10-14
    • US952663
    • 1978-10-19
    • Masami HimuroToshiro YamadaYoshimi Makino
    • Masami HimuroToshiro YamadaYoshimi Makino
    • G11B5/02G11B5/39G11B5/49G11B11/10G11B11/105H01F10/22G11B5/32G11B7/02G11C11/14G11C11/42
    • G11B5/3916G11B11/10547G11B5/4946H01F10/22
    • A pick-up device for reading out information which has been recorded on a magnetic medium. The device comprises a substrate and a layer of soft magnetic material overlying a surface of the substrate, the easy axis or direction of magnetization being normal to the surface and the magnetic material having properties capable of having magnetic bubble domains generated and propagated therein, so that when the pick-up device is used to read out information from a magnetic medium, patterns of magnetic domains are formed in the layer of magnetic material corresponding to the patterns of the recorded information. Although the magnetic material is of the type capable of having magnetic bubble domains generated and propagated therein, there is no need to provide the usual bias field for maintaining the bubble domains or for providing domain-transport or domain-annihilating fields. In one use of the pick-up device, light is transmitted through the substrate and through the layer of magnetic material to be reflected from a layer of light-reflective material back through the magnetic material and the substrate, whereby the polarization of the reflected light is rotated, relative to the polarization of the transmitted light, by an amount determined by the patterns of magnetic domains formed in the layer of magnetic material. Hence, the recorded information can be optically read from the magnetic medium. In another use of this device, a magnetoresistive head is disposed on the substrate, the resistance of this magnetoresistive head being varied as a function of the patterns of magnetic domains formed in the layer of magnetic material.
    • 用于读出记录在磁性介质上的信息的拾取装置。 该装置包括衬底和覆盖在衬底表面上的软磁材料层,容易的轴线或磁化方向垂直于表面,磁性材料具有能够在其中产生和传播的磁性气泡域的特性,使得 当拾取装置用于从磁性介质读出信息时,磁性层的图案形成在与记录的信息的图案对应的磁性材料层中。 虽然磁性材料是能够在其中产生和传播的磁性气泡畴的类型,但是不需要提供用于维持气泡域的通常的偏置场或用于提供域传输或域消除场。 在拾取装置的一个用途中,光被透过基板并通过磁性材料层从光反射材料层反射回到磁性材料和基片上,由此反射光的偏振 相对于透射光的偏振旋转由磁性材料层中形成的磁畴的图案确定的量。 因此,记录的信息可以从磁介质光学读取。 在该器件的另一用途中,磁阻头被设置在衬底上,该磁阻磁头的电阻随着形成在磁性材料层中的磁畴的图案而变化。
    • 2. 发明申请
    • Dry Etching Gas and Method of Dry Etching
    • 干蚀刻气体和干蚀刻方法
    • US20080274334A1
    • 2008-11-06
    • US11628014
    • 2005-05-30
    • Akira SekiyaTatsuya SugimotoToshiro YamadaTakanobu Mase
    • Akira SekiyaTatsuya SugimotoToshiro YamadaTakanobu Mase
    • C09K13/00H01L21/306B32B3/00
    • H01L21/31116C07C41/18C07C43/17C07C45/513C07C45/673C07C45/82C07C49/227C07C2601/04C07F9/5352Y10T428/24479C07C49/687
    • A dry etching gas comprising a C4-6 fluorine compound which has an ether bond or carbonyl group and one or more fluorine atoms in the molecule and is constituted only of carbon, fluorine, and oxygen atoms and in which the ratio of the number of fluorine atoms to the number of carbon atoms (F/C) is 1.9 or lower (provided that the compound is neither a fluorine compound having one cyclic ether bond and one carbon-carbon double bond nor a saturated fluorine compound having one carbonyl group); a mixed dry etching gas comprising the dry etching gas and at least one gas selected from the group consisting of rare gases, O2, O3, CO, CO2, CHF3, CH2F2, CF4, C2F6, and C3F8; and a method of dry etching which comprises converting either of these dry etching gases into a plasma and processing a semiconductor material with the plasma. The dry etching gases can be safely used, are reduced in influence on the global environment, and can highly selectively dry-etch a semiconductor material at a high dry etching rate to form a satisfactory pattern shape. The dry etching method employs either of these dry etching gases.
    • 一种干蚀刻气体,其包含在分子中具有醚键或羰基和一个或多个氟原子的C 4-6二氟化合物,其仅由碳,氟和氧原子构成,并且在 氟原子数与碳原子数的比例(F / C)为1.9以下(前提是该化合物既不是具有一个环醚键的氟化合物,也不是一个碳 - 碳双键,也不是饱和氟 具有一个羰基的化合物); 包括干蚀刻气体和至少一种选自稀有气体O 2,O 3,CO,CO 2的气体的混合干蚀刻气体, CH 2,CH 2,CH 2,CH 2,CF 4,C 2, F 6,和C 3 F 8; 以及干蚀刻方法,其包括将这些干蚀刻气体中的任一种转化为等离子体并用等离子体处理半导体材料。 可以安全地使用干蚀刻气体,减小对全局环境的影响,并且可以以高干蚀刻速率高度选择性地干蚀刻半导体材料以形成令人满意的图案形状。 干蚀刻方法采用这些干蚀刻气体中的任一种。
    • 4. 发明授权
    • Process for the preparation of fluorinated olefin
    • 氟化烯烃的制备方法
    • US06211420B1
    • 2001-04-03
    • US09180627
    • 1998-11-13
    • Akira SekiyaToshiro YamadaMitsuru Sugawara
    • Akira SekiyaToshiro YamadaMitsuru Sugawara
    • C07C1720
    • C07C23/08C07C17/206C07C17/208C07C17/383
    • In a process for preparing a fluorinated olefin having a carbon—carbon double bond, the carbon atoms of which have a fluorine atom, by reacting a halogenated olefin having at least one carbon—carbon double bond, a carbon atom or the carbon atoms of which bond have a chlorine atom or atoms bound thereto, and, in which the carbon atom or atoms with a single bond in the molecule have no halogen atom other than a fluorine atom, with an alkali metal fluoride, said reaction of the halogenated olefin with the alkali metal fluoride is conducted in the presence of an organic halogen-containing compound having a carbon—carbon single bond, a carbon or the carbons of which have at least one halogen atom other than fluorine atom.
    • 在通过使具有至少一个碳 - 碳双键的卤代烯烃,碳原子或碳原子的碳原子与碳原子一起形成碳原子的碳 - 碳双键的氟代烯烃的方法中,其碳原子具有氟原子 键具有与其结合的氯原子或原子,并且其中分子中具有单键的碳原子或原子不具有氟原子的卤素原子与碱金属氟化物反应,卤代烯烃与 碱金属氟化物在具有碳 - 碳单键的有机含卤素化合物,碳或碳具有至少一个除氟原子以外的卤素原子的存在下进行。